- CERN 18
- S403, bar with 3-layer spherical lens
- protons, pions @ 7 GeV/c
- geometrical reconstruction
- delta t selection with 1.5 ns
- photon count is within 50 mrad window around expected Cherenkov angle
- vertical bar ambiguities are not considered
Photon yield:

Single photon resolution :

Cherenkov track resolution:

Separation:
